CVE-2013-4368
The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack…
Does this matter?
Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.
Description
The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.
- CVSS 2.0
- 1.9 LOWAV:L/AC:M/Au:N/C:P/I:N/A:N
- EPSS
- 0.37% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- xen/xen
- Source
- secalert@redhat.com
References
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html
- http://rhn.redhat.com/errata/RHSA-2013-1449.html
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://www.debian.org/security/2014/dsa-3006
- http://www.openwall.com/lists/oss-security/2013/10/10/10
- https://exchange.xforce.ibmcloud.com/vulnerabilities/87799
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html
- http://rhn.redhat.com/errata/RHSA-2013-1449.html
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://www.debian.org/security/2014/dsa-3006
- http://www.openwall.com/lists/oss-security/2013/10/10/10
- https://exchange.xforce.ibmcloud.com/vulnerabilities/87799
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.